Table 1.

Estimated smoking prevalence according to sociodemographic characteristics in South Korea, stratified by gender

	Male (2,486/16,274,718)	p	Female (2,199/11,637,516)	p
	% (SE)*		% (SE)*
Total	50.1 (1.2)	<0.0001	7.2 (1.0)	<0.001
Age (y)
19–39	55.4 (2.0)	<0.0001	9.8 (1.6)	0.004
40–59	50.1 (2.0)		5.9 (1.4)
≥60	29.3 (2.1)		2.9 (1.0)
Recent alcohol consumption
Yes	52.6 (1.3)	<0.0001	8.7 (1.1)	0.003
No	33.0 (4.2)		3.2 (1.3)
Household income
Q1 (low)	44.8 (3.7)	0.0213	5.4 (2.0)	0.605
Q2	56.0 (2.8)		9.2 (1.7)
Q3	50.4 (2.5)		6.7 (1.4)
Q4 (high)	45.8 (2.2)		7.0 (2.3)
Education
≤Elementary	46.0 (3.5)	0.3383	3.8 (1.4)	0.024
Middle school	48.3 (4.2)		12.6 (3.4)
High school	52.7 (2.1)		8.6 (1.7)
≥College	48.7 (2.0)		5.9 (1.3)
Hours of sleep (per night)
<5	39.6 (8.4)	0.1667	4.3 (4.1)	0.783
5–7	49.2 (1.5)		7.2 (1.1)
≥8	52.9 (2.2)		7.5 (1.4)

Data on male and female are presented as (sample number/total estimated Korean population).

SE, standard error.

^*Weighted prevalence of smoking (standard error).